Coated particles and sunscreen and cosmetic products containing same

a coating and sunscreen technology, applied in the field of coating particles and sunscreen and cosmetic products containing same, can solve the problems of difficult formulation of transparent products, difficult to formulate products, and easy photodegradation and/or chemical degradation of organic sunscreen agents, etc., and achieve the effect of expanding the volume of the bed
US20070280895A1Inactive Publication Date: 2007-12-06WEIMER ALAN W +1
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Patent Information

Authority / Receiving Office
US · United States
Current Assignee / Owner
WEIMER ALAN W
Publication Date
2007-12-06
Estimated Expiration
Not applicable · inactive patent
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Abstract

Particles have an ultrathin, conformal coating are made using atomic layer deposition methods. The base particles include ceramic and metallic materials. The coatings can also be ceramic or metal materials that can be deposited in a binary reaction sequence. The coated particles are useful as fillers for electronic packaging applications, for making ceramic or cermet parts, as supported catalysts, as well as other applications.
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Description

CROSS-REFERENCE TO RELATED APPLICATION

[0001] This application claims benefit of U.S. Provisional Application No. 60 / 810,362, filed Jun. 2, 2006, and of U.S. Provisional Application No. 60 / 843,445, filed Sep. 8, 2006.BACKGROUND OF THE INVENTION

[0002] This invention relates to particulate materials that are useful as sunscreen agents, and to topical sunscreen or cosmetic compositions containing sunscreen agents.

[0003] Topical sunscreen products protect the skin from the effects of harmful ultraviolet (UV) radiation by preventing the transmission of that radiation through absorption and scattering processes. A variety of sunscreen agents have been used in such products. One type of sunscreen agent that is widely used is a particulate metal oxide. Titanium dioxide and zinc oxide particles are most commonly used. Sometimes combinations of these are used.

[0004] The difficulty with using metal oxides as the active sunscreen agent is that it is difficult to formulate a product that is t...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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